342 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



While the comparative lengths of the antennal articles are variable, sev- 

 eral important predominating characteristics are valuable in determining the 

 species. It is noticeable that articles 8 and 3 are usually the longest and that 

 article 8 is, with only two exceptions, always longer than 3 ; in only a few in- 

 stances do we find any of the remaining articles longer or as long as 3. 

 Articles 1 and 5 are nearly equal in length, while both are longer than 4, 6 and 

 7. At times an article may appear short in some mounted specimens due to 

 the angle of the antennae on the slide, rather than due to any variation in 

 the species. Little can be relied upon when we come to consider the com- 

 parative lengths of 4, 6 and 7 in the determination of this species, but these 

 articles may be very important in another species. In comparative work 

 great care must be exercised to procure a large number of normal specimens 

 which are carefully treated and mounted or abnormal variations are sure to 

 appear, and even then the resultant formula can only be approximate. In 

 summing up the above comparisons, we may approximate the antennal for- 

 mula as follows : 



8, 3, 2, 1, 5, 4, 6, 7 or 8, 3, 2, 1, 5, (4, 6, 7). 



It is noticeable that individual characteristics hold true in both antennae of 

 each individual. (Fig. 126). 



The mouth-parts are stout ; the rostral loop is about half as long as the 

 body. 



The legs (Fig. 126) are rather long, slender and normally haired. 

 The comparative lengths of the articles are as follows : Coxae usually longer 

 than broad. Troeliantcr narrow and one-half the length of the coxae. With 

 one very long spine. Tibia longer than femur and much narrower. Tarsi 

 one-third to four-ninths the length of the tibia. Claw usually extends straight 

 out from tarsus and is not well curved. 



The spines of the anal lobes (Fig. 126) are as long as the circumanal 

 spines. The inner anal lobes have two stout spines and several hairs on each. 

 There is a continuation of these small spine areas around the lateral margins 

 of the insect body and these mark the lateral way appendages. Beginning 

 with the inner anal lobe and extending around the lateral margin to the 

 middle of the anterior end of the body, the spine areas are : 



13 areas of two short, stout spines and several hairs each. 

 3 areas of many short, stout spines and several hairs each. 



In summing up we may say that there are 26 areas of two short spines and 

 several hairs each ; four areas of many short, stout spines and several hairs 

 each posteriorly from the antennae ; and two areas of many short, stout spines 

 and several hairs each between the antennae. These spine areas mark, then, 

 32 lateral posterior, and anterior wax appendages for each insect. 



Bggs. Oval in shape, smooth, lemon yellow to amber in color. Length, 

 5 mm., diameter about one-half the length. 



They are deposited in masses similar to those of the citrus mealy bug, 

 and are located in cracks, and wounds of the tree wliere the\' may be hidden 

 under the rough outer bark. (Fig. 127.) 



